Burner structure



y 5, 1953 J. BORDE BURNER STRUCTURE Filed July 17, 1950 I N V EN TOR.um; ea/m:-

Patented May 5, 1953 BURNER STRUCTURE- osetfior a Zurich, SwitzerlandApplication July 1'7, 1950, Serial Nn, 174,331

In Switzerland July- 20, 1949 1 8 Glamor This invention relates toburner structures, in particular to burners for kitchen and similar appliances which may even be used outdoors or the held (for campingor-milit-ary purposes) It is one or the primwa-y-objects of this'invemtion to provide-means affording marked eifioiency and safe operation ofa burner of the aforesaid type.

It is another object of the present invention ensuring increased speedinthe operation-of the burner and accurate regulation of the name thereof.

Still another objector the invention is to provide means facilitatingclosure of the nozzle device of the burnerin a rapid and safe manner andduringopera-tion of the burner, if desired.

It is a further object of the invention to provide means conducive to astrong and durable bu-rner structure which may be permanently joined tothe fuel housing and forms a unitary construction. with the nozzle orjetdevice.

Further objects of the present invention. im elude improvements insimplicity and economy of construct-ion, great adaptability to differentfields of use andreduction of the number of parts of which the.bur-neicon sists, so that the same takes up a minimum ofspace, becomescompact, may be readily installed and enhances-its-saleable andcommercial possibilities.

Still another object of the invention is to provide means contributingto considerable imp-rovement; in burner structures, the new burner beinglight in weight, cheap to manufacture and being eas y s mb r-1 and disasmb ed..-

With the above and other objects in View, the invention willhehereinafter more fully described and the combination and arrangementofparts will be shown in the accompanying drawing and pointed out in theclaims which form part of the specification.

In the drawing:

Fig, 1 a side view of the, burner gin odying the in ntio a pa f the burnoil. in s tion:

Fig, 2 is a fragmentary top plan of the, burner housing eq pp d with anozzle or jet Q 3 and 4 show on an enlarged scale two differentfragmentary longitudinal sectional views of th nozzle jet device with.thelower end of the Jet needle.

Fi 5. is, a gmentary top pl v ew tak along the line v v f Fig. 1 sho thes a member supporting the jet needle.

Fig. 6 is a longitudinal sectional view of the plate member and needle,taken along the line W LVI. oi Fig, 5-

B rerr ne now particu arly to throw me, re. is shown a burner b dyinsthe volition,v wh ch prov ded with a housin 1 I is preferably ofcylindrical form. Adjacent one end of said housing there is disposed aspiralshaped tube body 2 which is oval in crossasection and whichextends with its ends 3, 3 through suitable openings in, the wall ofhousing I into the interior of the latter. At the location ofpenetration of the tube ends 3, 3" the latter are affixed to. thehousing wall, as by soldering, so as to obtain a-fiuid-ti-ght jointthereat.

The spirally shaped portion of the tube body 2 supports a nozzle body 4whose nozzle opening 5 communicates with the interior of the tube body2. Above nozzle body 4 there is afiixed in any appropriate manner to thetube :body 2 and between oppositely disposed convolutions or coils ofthe latter a plate member I provided with a. plurality of openings 6.This plate member 1 has'in its center athreaded opening or perforation.Through this opening 8 threadedly extends a jet needle orpin 9, whichsupports at its upper end a slightly conical "disc; element havingspider arms Illa.

This jet needle 9 has a conical portion H which coacts with the suitablyshaped end of nozzle opening 5 and which is adapted to close the "latterwhen the needle 9 threadedly engages plate 1- at. opening 8 and isrotated by means of arms woof disc H).

The lower end portion of the jet needle 9 is provided with asubstantially flat end l2 rectangular in shape (Figs. 3 and 4), thewidth of said flat .end being somewhat smaller than the diameter of thenozzle opening 5, so that when needle 3 is turned or rotated, therelatively sharp edges of needle end l2 will contact and scrape theinner well do of the nozzle opening 5, thus freeing the same. from anyadhering impurities or-fuel waste deposits.

ordfitto oneratethe burner, needle .1 is first m ved. in upward drection and relative to plate 1-, hereby the conical needle, portion :1I will pro- :vide arr de ermined pace. a he ozz pe ing, flfhereaiter,any suitable liquid fuel, as for e so f av is all wed to oooumulatewththe-cu ed r c ss or cums aped part-H.0 5 the Wa l; o th h sing vl h chis lo ed b low the pira oo lut ns of th tube 2 a d t e gn t d, T e u ebody 2 s thus heat d and ue to convection of heat through the metal ofthe u e vbody Zr e'f el within bend po t ons 3, 3 o th i u ei llbe al ohos ed and s biecte t tas fi at oni el gas hen s a t to fl th ough thetube 2 o n zzle 4 o h re theeese se os and i there ignited by theburr-1m name at ,th's .part o the bu ner. Due t s adi y n ea intemperature of the tubular body 2 caused by contact with the flame, osifica i o the liq fuel present n. he t e ends. 3 3 wi l be. continuand?a celerated nd exp d ted The ga scap ng fr m th en of nozzl 4 passesfrom below par y hrough he p nin s 6 of plate I and will also bediverted partly by the curved underface of plate 1 in outward direction,so that the created flame of the burner will assume a certain width,thus always remainin in contact with both convolutions or coils of thetube body 2, which, consequently, become considerably heated, so thatthe ends 3, 3' of the tube body which are in contact with the fuel inthe housing will maintain and continue gasification of the fuel.

The gas which ascends through the holes or openings 6 of the plate I iscollected or caught within the upper disc element [0, so that the gasupon impingement upon disc or plate surface is intimately mixed with airand will be completely burned.

A wire piece [4 having hook-shaped ends 15 can be brought intoengagement with notches l6 of disc plate [0, so that the latter may beturned together with jet needle 9 which can be adjusted in its positionrelative to opening even during operation of the burner. Conical needleportion ll may thus close more or lessthe aforesaid opening whereby theintensity of the flame may be easily regulated.

The cross-section of the tubular body 2 is oval or elliptical, the bodybeing at least partly flattened, to obtain a relatively narrowcrosssection for the passage of the fuel and further intimate contact ofthe fuel gas when it ascends from the ends 3, 3' of the tube body 2 withthe heated walls of the latter. In this manner, complete gasification ofthe fuel takes place and only fuel, which is entirely trans formed intogas reaches carburetor nozzle 4.

In the ends 3, 3 of the tubular body 2 there are provided a plurality ofperforations I! through which in accordance with the consumption ordelivery of fuel from housing I, air entering nozzle 4 may flow intosaid housing. The end wall [8 of the cylindrical housing extends at bothsides beyond said housing (see Fig. 2) so that the latter cannot betipped or tilted when in position of operation.

A wire or like stirrup [9 held on and coiled with its end around housingI may be employed as a handle for manipulating the burner or to placethe latter in operative position within a cooking utensil or any othersuitable appliance.

It can thus be seen that there has been provided in accordance with thisinvention a compact and efficient burner structure for liquid fuel to begasified, said burner being characterized by a tubular body terminatingin two legs having open ends, said tubular body incuding coil meansextending intermediate said two legs, and a jet or nozzle device seatedon said coil means and in communication with the interior of saidtubular body, said legs being adapted to extend into a fuel supplyhousing, whereby said open ends establish connection between said fuelsupply housing and said jet device.

While one embodiment of the invention has been shown and described, itwill be easily understood that the same is capable of modificationwithout departure from the general scope and spirit of the invention asdefined in the claims.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A burner structure for gasifiabe fuel comprising a housing adapted tocontain said fuel, a tubular body seated on said housing, a nozzlearranged on said tubular body, said tubular body terminating in two endportions extending into said housing and connected with the latterwhereby the interior of said housing communicates through said tubularbody with said nozzle, needle means in operative connection with andmovable relatively to said nozzle, a plate member supporting said needlemeans and guiding the same, said plate member being provided with aplurality of openings for diverting fuel gas emanating from said nozzle,and an end disk affixed to said needle means above said plate member andforming bafiie means against which said fuel gas may be impinged forintimate mixture with air, whereby a combustible air-fuel mixture forigni tion is constituted, said end disk including arms, said arms beingrotatable to actuate said needle means and to move the same through saidplate member and relatively to said nozzle.

2. A burner structure according to claim 1, wherein said tubular bodyincludes a spiralshaped portion, which is positioned intermediate saidend portions of said tubular body, said housing being provided with arecess for engagement with said spiral-shaped portion.

3. A burner structure according to claim 2, wherein said nozzle isarranged for support on said spiral-shaped portion and communicates withthe interior of same.

4. A burner structure according to claim 1, wherein said openings ofsaid plate member are concentrically arranged with respect to saidneedle means, to thereby intensify diversion of fuel gas emanating fromsaid nozzle.

5. A burner structure according to claim 1, including arectangular-shaped end portion connected to said needle means andadapted to engage the inner wall of said nozzle when said needle meansis rotated.

6. A burner structure according to claim 1, wherein said end portionsare provided with perforations to facilitate contact of said tubularbody with a larger surface of said fuel when contained in said housing.

7. A burner structure according to claim 1, wherein the cross-section ofsaid tubular body is oval-shaped.

8. A burner structure according to claim 1, wherein said tubular bodyincludes a plurality of coils extending in a horizontal direction withrespect to said end portions and seated on said housing.

JOSEF BORDE.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 56,530 Child 1 July 24, 1866 270,690 Ostlund Jan. 16, 1883386,534 Goverts July 24, 1888 390,660 Gill et al. Oct. 9, 1888 524,093Niemczik Aug. '7, 1894 689,785 Braun Dec. 24, 1901 1,281,056 Nash Oct.8, 1918 1,299,263 Tester Apr. 1, 1919 1,469,714 Broch Oct. 2, 19231,664,410 Greenwald et al. Apr. 3, 1928 1,673,119 McKesson June 12, 1928FOREIGN PATENTS Number Country Date 5,803 Great Britain of 1892 42,244Sweden Mar. 28, 1917 502,043 France Feb. 12, 1920 171,574 Great BritainNov. 24, 1921 Norway Nov; 2. 1942

